*/
return me->has_extent_callback (group_extent_callback_proc, a) ||
(me->has_extent_callback (Hara_kiri_group_spanner::y_extent_proc, a));
*/
return me->has_extent_callback (group_extent_callback_proc, a) ||
(me->has_extent_callback (Hara_kiri_group_spanner::y_extent_proc, a));